"This sure is a real puzzler to me...maybe different people apply different amounts of lube, but I'm struggling to imagine someone putting so much lube in a bore that if frozen it would noticeably bend a bore brush, and actually cause problems."
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Roundball
I know of a half-dozen posters on various websites that reported using 54 cal brushes to clean their 50 cals.... 50 cal brushes to clean their 45s -- myself included... etc. Hope this better explains my last post about bent bristles.
Also.. Wonder Lube is a by-product of Bore Butter. The consistency of Wonder Lube allows it to melt at a slightly higher temperature ( around +10/15 degrees).
Also... my bouts with Wonder/Lube-Bore Butter date back to near 1990. With my first roundball rifle back then (junk CVA Plainsman 1-66), I would lather-up the shooting patches real heavy-like. I put it on like you would lather your bagel with cream cheese..lol. That following winter, Detroit muzzleloading season had a severe cold spell. I, like an idiot, was out there in the woods with every kind of face mask, electric gloves, toe heaters... etc. That's where I can relay my personal experiences about this product to another poster.
The moral to this story is that no matter if the application is dense or not, if it freezes & yes it will below 32 degrees, your bore brush will have one heck-of-a-time removing it... your bullet will not fare too well shootin with it... especially at -20F. It will sometimes come out in chunks at around 30F if left exposed to the elements. Go ahead & freeze a batch at 30F... try to apply it to a patch or conical immediately after opening it.
Now you tell me how that product can work properly at that temperature... let alone -20 degrees! Lubes like that cannot "lubricate" if they break-away from the bullet in pieces.
You really need to experience it Roundball! Ask the wifey if you can go to Siberia or Antartica muzzleloading this winter for an important blackpowder-like experiment... lol.